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KonstantinChe [14]
3 years ago
14

William recorded data to determine the relationship between the time usage, x, and the percentage of charge left on his mobile p

hone, y. He graphed the data and drew the line of best fit. The equation of the line of best fit is y = -10x + 100. About how many hours will it take for the phone lose its charge completely?
Mathematics
1 answer:
beks73 [17]3 years ago
7 0
The answer is 10 hours.  

Hope I helped.  
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What is the area of triangle ABC?
miskamm [114]

Answer:

<h2>7 square units</h2>

Step-by-step explanation:

As you can observe in the image attached, we know the coordinates of each vertex of the triangle.

To find the area using only its vertex coordinates, we need to use the following formula

A=\frac{1}{2}[x_{1}(y_{2} -y_{3}+x_{2}(y_{3} -y_{1} )+x_{3}(y_{1}-y_{2}  )   )

Where the coordinates are

A(1,1)\\B(4,0)\\C(3,5)

Replacing coordinates, we have

A=\frac{1}{2}[1(0 -5)+4(5 -1 )+3(1-0  )  ]\\A=\frac{1}{2} [-5+16+3]=\frac{1}{2}(14)\\ A=7

Therefore, the area of the triangle is 7 square units. So, the right answer is the second choice.

8 0
3 years ago
NEED THIS ASP!!!!!!!!!!!!!!!!!!!!!!! Which inequality represents the sentence?
Norma-Jean [14]

Answer: c, -3.2 + 1.5n less-than-or-equal-to 8.6

Step-by-step explanation:

I got it right on the quiz

5 0
3 years ago
Read 2 more answers
Chad is making an orange smoothie. The recipe calls for three part frozen yogurt to five part orange juice. How many ounces of f
dedylja [7]

Answer: it will be 6 ounces of frozen yogurt and 10 ounces of orange juice.

Step-by-step explanation:

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4 0
2 years ago
Solve with elimination.
wlad13 [49]

Answer:y=6.61,x=-6.46

Step-by-step explanation:

3x+7y=-26(×5)

         -

5x+3y=-14(×3)

=15x+35y=-130

           -

 15x+9y=-42

subtracting the 2 equations =15x-15x+35y-9y=-130-(-42)

=26y=172

y=172÷26

y=6.61

substitute y in the first equation=3x+6.61=-26

3x=-26+6.61=-19.39

x=-19.39÷3

x=-6.46

7 0
3 years ago
The answer to this question.
LekaFEV [45]

Answer:

.................................

3 0
4 years ago
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